Intravenous drug extravasation alarm device

Abstract

The utility model discloses an intravenous medicine exosmosis alarm device which comprises dressing, a water absorption layer, a conducting layer, a first contact, a second contact, a power source and a buzzer, the water absorption layer and the conducting layer are located on the two sides of the dressing, the water absorption layer is connected with the conducting layer, and the first contact is operably connected with the conducting layer; the second contact is operably connected with the needle head; the power supply is electrically connected with the buzzer, the first contact is electrically connected with the power supply, and the second contact is electrically connected with the buzzer. Under a normal condition, the water absorption layer is in a dry state, the first contact and the second contact are separated by the water absorption layer, and no current passes through between the first contact and the second contact; when medicine begins to leak outwards, the medicine can be absorbed by the water absorption layer, current can be conducted to the first contact from the conductive layer, the conductive layer, the water absorption layer and the second contact extending out of the needle head form a complete circuit path, the buzzer makes a sound alarm to prompt medicine leakage, the frequency and intensity of manual inspection are reduced, and leakage events are quickly responded.

Description

Technical Field

[0001] This utility model relates to the field of infusion device accessories technology, and in particular to an intravenous drug extravasation alarm device. Background Technology

[0002] Intravenous infusion is a method of delivering large amounts of sterile fluids, electrolytes, and medications into the body via a vein, utilizing atmospheric pressure and hydrostatic pressure. Intravenous infusion is one of the most basic nursing techniques in clinical practice and plays a very important role in nursing work.

[0003] Existing intravenous infusion devices typically include a drip set, infusion tubing, a needle or catheter, and a dressing to secure the needle. However, these standard devices often lack active monitoring and alarm mechanisms to detect in real time whether extravasation has begun. Nurses and other healthcare professionals need to check the infusion site regularly, but given the large number of patients and limited nursing resources in a hospital environment, continuous monitoring of every patient is impossible. This increases the risk of undetected extravasation, which, for some medications, can cause phlebitis, local skin ulceration, or even necrosis at and around the puncture site. Utility Model Content

[0004] This application provides a venous drug extravasation alarm device, which solves the technical problem that existing venous infusion devices cannot monitor drug extravasation.

[0005] This application provides a device for endovenous drug extravasation alarm, comprising:

[0006] A dressing that is operatively adhered to the infusion site and secures the needle;

[0007] An absorbent layer is disposed on the side of the dressing;

[0008] A conductive layer is disposed on the side of the dressing, and the absorbent layer and the conductive layer are located on both sides of the dressing, with the absorbent layer connected to the conductive layer;

[0009] A first contact, which is operatively connected to the conductive layer;

[0010] The second contact is operatively connected to the needle tip;

[0011] A power supply and a buzzer are electrically connected, the first contact is electrically connected to the power supply, and the second contact is electrically connected to the buzzer.

[0012] In some embodiments, the conductive layer, the first contact, and the second contact are all made of flexible conductive materials.

[0013] In some embodiments, the intravenous drug extravasation alarm device further includes a wristband and a first platform, the wristband being connected to both sides of the first platform, the power supply and the buzzer being fixedly mounted on the first platform, and the first platform being disposed on one side of the dressing.

[0014] In some embodiments, a through hole is provided on the side of the first platform, a slide rod is slidably disposed in the through hole, a second platform is fixedly disposed at the end of the slide rod near the dressing for fixing the intravenous infusion tube, and a push rod is fixedly disposed at the end of the slide rod near the dressing.

[0015] In some embodiments, there are two through holes, the slide rod is located on both sides of the absorbent layer, and the second platform and the push rod are fixedly connected to the corresponding ends of the slide rod.

[0016] In some embodiments, the intravenous drug extravasation alarm device further includes a flexible heating element operably attached to the second platform, the flexible heating element being electrically connected to the positive and negative terminals of the power supply, and a switch being provided between the flexible heating element and the power supply.

[0017] In some embodiments, a conduit is fixedly disposed on the flexible heating element, the wire of the second contact is disposed in the conduit, the second contact is disposed parallel to the slide bar, and the second contact is located within the length range of the absorbent layer.

[0018] In some embodiments, the wires of the flexible heating element, the first contact, and the second contact are all fixedly connected to the push rod.

[0019] In some embodiments, a strap is provided at one end of the slide bar near the dressing, and the two ends of the strap are respectively fixedly disposed on the corresponding slide bar, the strap being used to fix the hand.

[0020] In some embodiments, the intravenous drug extravasation alarm device further includes an indicator light, which is fixedly mounted on the first platform and connected in series with the power supply and the buzzer.

[0021] The beneficial effects of this application are as follows:

[0022] The working principle of this intravenous drug extravasation alarm device is based on the conductivity of liquids. Under normal circumstances, the absorbent layer is dry, and the first and second contacts are separated by the absorbent layer. No current flows between the first and second contacts because the circuit between them is broken. When the drug begins to extravasate, that is, leaks out of the body from around the intravenous needle, it is absorbed by the absorbent layer. Once the absorbent layer is wetted, it absorbs the leaked drug and becomes part of the conductor, which can conduct current from the conductive layer to the first contact. This makes the conductive layer, the absorbent layer, and the second contact extending from the needle form a complete circuit path, causing the buzzer to sound an alarm to indicate drug extravasation. This greatly improves the safety of infusion, reduces the frequency and intensity of manual inspection, and provides a rapid response to extravasation events. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model.

[0024] Figure 1 This is a schematic diagram of one embodiment of a venous drug extravasation alarm device provided in this application;

[0025] Figure 2 This is a schematic diagram of the dressing structure in a venous drug extravasation alarm device provided in this application;

[0026] Figure 3 This is a schematic diagram of another embodiment of the intravenous drug extravasation alarm device provided in this application;

[0027] Figure 4 A circuit structure diagram of one embodiment of an intravenous drug extravasation alarm device provided in this application;

[0028] Figure 5 A schematic diagram of the circuit structure of another embodiment of the intravenous drug extravasation alarm device provided in this application.

[0029] Among them, 10-dressing; 11-absorbent layer; 12-conductive layer; 13-first contact; 14-second contact; 15-power supply; 16-buzzer; 17-indicator light;

[0030] 20-Wristband; 21-First platform; 22-Through hole; 23-Slide rod; 24-Second platform; 25-Push rod; 26-Flexible heating element; 27-Switch; 28-Conduit; 29-Strap. Detailed Implementation

[0031] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0032] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0033] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0034] This application provides a venous drug extravasation alarm device, which solves the technical problem that existing venous infusion devices cannot monitor drug extravasation.

[0035] The technical solution in this application is to solve the above-mentioned technical problems, and the general idea is as follows:

[0036] like Figure 1 , Figure 2 , Figure 4 As shown, this application provides an intravenous drug extravasation alarm device, comprising:

[0037] Dressing 10 is operably attached to the infusion site and fixes the needle. The infusion needle is inserted into the tissue skin. The dressing 10 is directly attached to the skin surface and then covers the needle insertion site. The material of the dressing 10 can be medical pressure-sensitive adhesive or porous polyurethane membrane.

[0038] Absorbent layer 11, which is disposed on the side of the dressing 10, and the material of the absorbent layer 11 may be selected from super absorbent polymer resin, cotton fiber or other super absorbent polymer;

[0039] A conductive layer 12 is disposed on the side of the dressing 10, and the absorbent layer 11 and the conductive layer 12 are located on both sides of the dressing 10, with the absorbent layer 11 connected to the conductive layer 12.

[0040] A first contact 13 is operably connected to the conductive layer 12;

[0041] The second contact 14 is operably connected to the needle.

[0042] A power supply 15 and a buzzer 16 are electrically connected. The first contact 13 is electrically connected to the power supply 15, and the second contact 14 is electrically connected to the buzzer 16.

[0043] Specifically, the conductive layer 12, the first contact 13, and the second contact 14 are all flexible conductive materials, such as conductive fabric, conductive polymer, or graphene-based materials. The conductive layer 12 is attached to the surface of the absorbent layer 11 with conductive adhesive, the first contact 13 is attached to the surface of the conductive layer 12 with conductive adhesive, and the second contact 14 is attached to the metal needle tip of the intravenous infusion needle with conductive adhesive.

[0044] The working principle of this intravenous drug extravasation alarm device is based on the conductivity of liquids. Under normal circumstances, the absorbent layer 11 is dry, and the first contact 13 and the second contact 14 are separated by the absorbent layer 11. No current flows between the first contact 13 and the second contact 14 because the circuit between them is broken. When the drug begins to extravasate, that is, leaks from around the intravenous needle into the body, it will be absorbed by the absorbent layer 11. Once the absorbent layer 11 is wetted, it absorbs the leaked drug and becomes part of the conductor, which can conduct current from the conductive layer 12 to the first contact 13. This makes the conductive layer 12, the absorbent layer 11, and the second contact 14 extending from the needle form a complete circuit path, causing the buzzer 16 to sound an alarm to indicate drug extravasation. This greatly improves the safety of infusion, reduces the frequency and intensity of manual inspection, and provides a rapid response to extravasation events.

[0045] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0046] Preferred, such as Figure 3As shown, the intravenous drug extravasation alarm device also includes a wristband 20 and a first platform 21. The wristband 20 is connected to both sides of the first platform 21. The wristband 20 can be a fastening strap with Velcro, which is fastened together to fix the wrist. Alternatively, the wristband 20 can be an elastic band, which is directly slipped onto the wrist. The power supply 15 and the buzzer 16 are both fixedly mounted on the first platform 21, which is located on one side of the dressing 10.

[0047] The first platform 21 can be a miniaturized structural component made of lightweight plastic or composite material. The power supply 15 and the buzzer 16 are fixedly mounted on the surface of the first platform 21. The power supply 15 and the buzzer 16 can also be housed inside the first platform 21. A hole for sound diffusion of the buzzer 16 is provided on the surface of the first platform 21. A charging port for charging the power supply 15 is provided on the side of the first platform 21.

[0048] The wristband 20 is fixedly connected to both sides of the first platform 21 at both ends, providing additional support around the wrist and preventing the entire device from accidentally falling off. The device has a higher degree of integration and is easy to install.

[0049] Preferably, the first platform 21 has a through hole 22 on its side, and a slide rod 23 is slidably disposed in the through hole 22. A second platform 24 is fixedly disposed at one end of the slide rod 23 near the dressing 10 for fixing the intravenous infusion tube. A push rod 25 is fixedly disposed at one end of the slide rod 23 near the dressing 10.

[0050] When inserting the needle, the needle tip will be inserted between the second platform 24 and the dressing 10 towards the arm. The conductive layer 12 is placed on the side of the dressing 10 away from the second platform 24, which increases the distance between the needle tip and the conductive layer 12 and prevents the conductive layer 12 from being too close to the first contact 13 and causing the circuit to be connected.

[0051] Specifically, there are two through holes 22, the slide rod 23 is located on both sides of the water-absorbing layer 11, and the second platform 24 and the push rod 25 are fixedly connected to the corresponding ends of the slide rod 23.

[0052] The second platform 24 is made of a material with sufficient strength, such as lightweight plastic or composite material. In addition to providing a fixed position for the infusion tube, the second platform 24 also provides support for the slide rod 23. Together with the push rod 25, it is fixedly connected to the slide rod 23 at the other end, making the structure of the slide rod 23 more stable and preventing deformation. The second platform 24 is fixed to one end of the slide rod 23 with fasteners, such as screws or clips. The slide rod 23 and the push rod 25 are made of lightweight but strong materials, such as stainless steel or aluminum alloy, to ensure durability and smooth sliding. The inner wall of the through hole 22 and the surface of the slide rod 23 are smooth. A lubricating coating or lubricating oil can also be applied between the inner wall of the through hole 22 and the slide rod 23 to reduce friction.

[0053] Two through holes 22 are located on both sides of the absorbent layer 11, ensuring that the infusion needle is positioned between the two sliding rods 23. Pushing the push rod 25 can apply a uniform pushing force to the second platform 24. When it is necessary to remove the needle, push the push rod 25 to move it in the through hole 22. Since the infusion tube is fixed on the second platform 24 and the infusion needle is located on one side of the second platform 24, the movement of the second platform 24 can smoothly remove the infusion needle and avoid secondary injury.

[0054] Further preferred, such as Figure 3 , Figure 5 As shown, the intravenous drug extravasation alarm device also includes a flexible heating pad 26, which is operably attached to the second platform 24. The flexible heating pad 26 is electrically connected to the positive and negative terminals of the power supply 15. A switch 27 is provided between the flexible heating pad 26 and the power supply 15. The switch 27 is a miniaturized medical-grade switch to ensure safety, reliability, and ease of operation. The switch 27 is fixedly mounted on the first platform 21 for easy operation. The flexible heating pad 26 is attached to the second platform 24 to fix the infusion tube on the second platform 24, preventing the infusion tube from shaking and affecting the movement of the infusion needle, so that the position of the infusion needle is not affected by the infusion tube. At the same time, when the switch 27 is turned on, the flexible heating pad 26 heats up, which can also heat the liquid in the infusion tube. Local heating can help maintain a suitable temperature at the infusion site, which can significantly improve patient comfort, promote blood circulation, reduce vasoconstriction caused by low temperature, and thus improve the absorption rate and efficacy of certain drugs.

[0055] A conduit 28 is fixedly installed on the flexible heating element 26. The wire of the second contact 14 is installed in the conduit 28. The second contact 14 is installed parallel to the slide rod 23. The second contact 14 is located within the length range of the absorbent layer 11. The conduit 28 ensures that the range of motion of the second contact 14 is within the length range of the absorbent layer 11, ensuring that the wire is neatly arranged and not squeezed or pulled, which facilitates the connection between the second contact 14 and the metal needle tip of the infusion needle.

[0056] The wires of the flexible heating element 26, the first contact 13, and the second contact 14 are all fixedly connected to the push rod 25. The wires are fixed inside or on the surface of the push rod 25 by an embedded design or a clamp, ensuring that the wires are not affected when the push rod 25 moves, and the overall structure of the device is more neat.

[0057] Preferably, a strap 29 is provided at one end of the slide bar 23 near the dressing 10. The two ends of the strap 29 are respectively fixedly mounted on the corresponding slide bar 23. The two ends of the strap 29 are directly connected to the slide bar 23 by a strong fastener, such as a rivet, screw, or buckle, to ensure that the strap 29 will not fall off or loosen when the slide bar 23 moves. The strap 29 is used to fix the hand. The strap 29 can be a two-section restraint strap and is fixed by Velcro or snaps. The strap 29 fixes the hand and keeps the relative position of the first platform 21 and the second platform 24 as stable as possible through the slide bar 23. During the infusion process, it prevents the infusion needle from shaking due to wrist movement and avoids injury to the human body. In case of liquid leakage, first untie the strap 29, and then push the push rod 25 to make the second platform 24 pull out the infusion needle. The operation is convenient.

[0058] Optionally, the intravenous drug extravasation alarm device also includes an indicator light 17, which is fixedly mounted on the first platform 21. The indicator light 17 is connected in series with the power supply 15 and the buzzer 16, forming a complete circuit path in the conductive layer 12, the absorbent layer 11, and the second contact 14 extending from the needle. This allows the indicator light 17 to light up at the same time as the buzzer 16 sounds an alarm, providing a visual alert to people in the surrounding area and preventing the leakage from going undetected in noisy environments.

[0059] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0060] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A device for endovenous drug extravasation alarm, characterized in that, include: A dressing that is operatively adhered to the infusion site and secures the needle; An absorbent layer is disposed on the side of the dressing; A conductive layer is disposed on the side of the dressing, and the absorbent layer and the conductive layer are located on both sides of the dressing, with the absorbent layer connected to the conductive layer; A first contact, which is operatively connected to the conductive layer; The second contact is operatively connected to the needle tip; A power supply and a buzzer are electrically connected, the first contact is electrically connected to the power supply, and the second contact is electrically connected to the buzzer.

2. The intravenous drug extravasation alarm device as described in claim 1, characterized in that, The conductive layer, the first contact, and the second contact are all made of flexible conductive materials.

3. The intravenous drug extravasation alarm device as described in claim 1, characterized in that, It also includes a wristband and a first platform, the wristband being connected to both sides of the first platform, and the power supply and buzzer being fixedly mounted on the first platform, which is located on one side of the dressing.

4. The intravenous drug extravasation alarm device as described in claim 3, characterized in that, The first platform has a through hole on its side, and a slide rod is slidably disposed in the through hole. A second platform is fixedly disposed at the end of the slide rod near the dressing for fixing the intravenous infusion tube. A push rod is fixedly disposed at the end of the slide rod near the dressing.

5. The intravenous drug extravasation alarm device as described in claim 4, characterized in that, There are two through holes, the slide rod is located on both sides of the water-absorbing layer, and the second platform and the push rod are fixedly connected to the corresponding ends of the slide rod.

6. The intravenous drug extravasation alarm device as described in claim 4, characterized in that, It also includes a flexible heating element, which is operably attached to the second platform. The flexible heating element is electrically connected to the positive and negative terminals of the power supply, and a switch is provided between the flexible heating element and the power supply.

7. The intravenous drug extravasation alarm device as described in claim 6, characterized in that, A conduit is fixedly installed on the flexible heating element, and the wire of the second contact is disposed in the conduit. The second contact is arranged parallel to the slide rod and is located within the length range of the water-absorbing layer.

8. The intravenous drug extravasation alarm device as described in claim 6, characterized in that, The wires of the flexible heating element, the first contact, and the second contact are all fixedly connected to the push rod.

9. The intravenous drug extravasation alarm device as described in claim 4, characterized in that, The slide bar is also provided with a strap at one end near the dressing. The two ends of the strap are respectively fixed on the corresponding slide bar. The strap is used to fix the hand.

10. The intravenous drug extravasation alarm device as described in claim 3, characterized in that, It also includes an indicator light, which is fixedly mounted on the first platform and connected in series with the power supply and the buzzer.

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